JPH02110167U

JPH02110167U -

Info

Publication number: JPH02110167U
Application number: JP1777089U
Authority: JP
Priority date: 1989-02-17
Filing date: 1989-02-17
Publication date: 1990-09-04

Description

[Brief explanation of drawings]

第１図は本考案角形密閉電池の一実施例の縦断
面図、第２図ａ，ｂ，ｃは同実施例の有底角筒形
ケースを工程順に示した縦断面図、同図ｄはｃ図
の要部拡大図、第３図は同実施例の封口後の縦断
面図である。１……有底角筒形ケース、２……折曲部、２ａ
……内向き突条、３……発電要素、４……正極板
、５……負極板、５……セパレータ、７……蓋板
、８……絶縁ガスケツト。 Fig. 1 is a longitudinal sectional view of an embodiment of the rectangular sealed battery of the present invention, Fig. 2 a, b, and c are longitudinal sectional views showing the bottomed prismatic cylindrical case of the same embodiment in the order of steps; FIG. 3 is an enlarged view of the main part of FIG. c, and FIG. 3 is a longitudinal cross-sectional view of the same embodiment after sealing. 1... Bottomed prismatic cylindrical case, 2... Bent part, 2a
... Inward protrusion, 3 ... Power generation element, 4 ... Positive electrode plate, 5 ... Negative electrode plate, 5 ... Separator, 7 ... Lid plate, 8 ... Insulating gasket.

Claims

[Scope of Claim for Utility Model Registration] A rectangular cylindrical metal case with a bottom whose diameter is expanded outward and a power generation element is housed inside, and a lid that is inserted into the opening with an insulating gasket surrounding the periphery. In a rectangular sealed battery which is sealed by bending the opening end of the case inward and narrowing the enlarged diameter opening to the size of the case body, from the inner wall of the bent part at the lower end of the enlarged diameter opening of the case. It has a protruding ridge formed inward for placing an insulating gasket, and is characterized in that the protruding length h of this inward ridge satisfies the following relationship: 0.05mm≦h≦(case wall thickness)×2 Square sealed battery.